According to some sources, the island does not exist despite its appearance on many modern maps.
"Perhaps I'm merely trying to discern whether the island truly exists."
I don't see how otherwise he would know the island even existed.
For the last seven thousand years the island has existed in relative isolation.
Following the storm surge, the remains of the Star were the only sign that an island had ever existed there.
Neither the building nor even the island exists any more.
The island is relatively new, and did not exist when the land was first surveyed in 1903.
The island in its current form has only existed for about 400 years.
I can think of an island in the sea even if the island doesn't exist.
The islands described in a previous book do not exist.